Deselecting all tracks does copy/paste to the original track, but that requires extra steps for users unless they leave all tracks deselected and never need to use track targeting for anything else. Sounds like a good solution would be to offer a new command shortcut "Paste to Original Track". Users could assign Cmd+V to it if they never want paste to respect track targeting, or they could find a different key combination for it if they wanted to retain the option of both behaviors.
We’ve marked this Under Review, see comment.
This is a hangover from the past when users couldn't add keyframes to the clip keyframe rubberbands unless Toggle Animation was on in the ECP. Since these 3 intrinsics were the default effects for the clip rubberbands, animation was toggled on for them. Today you can add a keyframe using either the Selection tool (Ctrl/Cmd+click) or the Pen tool (just click) and animation is toggled on automatically, so there's no longer a need to have animation on by default. Thanks for the feedback and for bringing it to our attention!
Does double-clicking on the program monitor image do anything to speed up your workflow? If you have a picture in picture effect, you can park the playhead on the composited clips, then select the bottom layer on say V1, then double-click its image in the Program monitor to activate the direct manipulation controls and move or rescale the image. Select the PIP clip in the Timeline, then double-click on it in the Program monitor and it will activate its direct manipulation controls.